Gas burner construction



March 17,1942. K RICH n 2,216,629-

GAS BURNER CONSTRUCTION Filed June 9, 19:58 2 sheets-sheet 1 Wil* 30 23 Meh-301m, y l

30 /fE/7H R/cw Marh17,1942. K, Rm.,- 2,276,629

GAS BURNER CONSTRUCTION Fi1ed June 9, 193s 2V sheets-sheet 2 Patented Mar. 17, 1942 AUNITED STATES PATENT OFFICE'. l 2,276,629. v

GAS BURNER CONSTRUCTION Harper Trust Application June 9, 1938, Serial No. 212,669

1 Claim.

which have heretofore required that the burner be made with two parts.

It is a further object of this invention to provide a gas burner formed as an integral construction which has a pair of concentric gas chambers for a simmer burner and a main burner, respectively and in which there is a bridged portion providing tunnel passages for each of said chambers.

It is a further object of this invention to pro-v which is enclosed by an outside wall 2|, atop wall 22 and inside wall 23. When ythe burner is assembled and in use, the chamber constitutes a gas passage for the main outside burner as is clearly illustrated in Figure 6. Located inside of the main burner chamber 20 and preferably arranged concentrlcally therewith is a second gas chamber which in use constitutesthe gas passage for the inner or simmer burner. This passage is formed by the wall 23, an inside wall 26, and a top wall 21 which in. this illustration, is provided with a plurality of burner openings 28, located so as to provide a, simmer burner centrally of the main burner. 'The main burner may be equipped with burner openings through its inside or outside walls or perhaps both, but in this vide a gas `burner having main and simmer.

burner portions which is substantially symmetrical in construction whereby burners of identically the same construction may be employed in an assembly of four or more burners as employed for household stoves and the like.

Further objects not specifically enumerated are contemplated for this invention as will be apparent to one skilled in the art as the following description proceeds of one illustrative example thereof. The following description will refer to the accompanying drawings in which,

Figure 1 is a plan view of the underneath side of a gas burner formed in accordance with this invention; A

Figure 2 is an elevational view as seen from the right hand side of Figure l;

Figure 3 is a. cross sectional elevational view taken on the line 3-3 of Figure 1 and looking Y in the direction of the arrows;

Figure 4 is a cross sectional elevational view taken at right angles to the view of Figure 3 on the line 4 4 of Figure l and looking in the direction of the arrows;

Figure 5 is a plan view of the various parts constituting a group of four complete burners, the upper burner portions of which are constructed in accordance with this invention.

In this View, two of the burner heads are removed to illustrate the interior construction of the castings which support the burners;

Figure 6 is a side elevational view partly in cross section taken on the line 6-6 of Figure 5 and looking in the direction ofthe arrows.

By referring to the drawings, it will be apparent l that the burner here disclosed for the purpose of illustrating the present invention is of an annular construction which slightly tapers from bottom case, is illustrated as having burner openings 30 disposed in the outside wall 2'I.

In accordance with existing practice it is desirable to provide means in the construction of the burners of this invention for lighting the gas ejected from the burner openings from `a pilot light so that preferably the simmer burner-may be first lighted from the pilot and thereafter the main burner lighted from the simmer burner. For the purpose of this latter operation, a radially disposed tube 32 which is equipped with a gas opening 33 is disposed through the main gas chamber 20 so as to provide a communication from a region on the inside of the burner which is above the simmer burner openingsr and the outside of the burner wall 2| preferably slightly below the outside burner openings 30. This communicating tube is utilized in cases where the main burner openings 3U are disposed on the outside of the burners for the purpose of igniting the outside burner openings from the inside simmer burner openings. This particular feature is set forth in United States 'Letters Patent No. 2,083,602, issuedron June 15, 193'?. Obviously, however, if the main burner is equipped only with inside burner openings, this combustion tube is not necessary. In operation, gas from the main burner chamber 20 enters the tube 32 through thegas inlet port 33` and when the tube is so charged with gas, a burning of the gas takes place initiated on the simmer burner so that the outer burner openings become promptly ignited.

The burner is furthery equipped with structural provisions for lighting the `simmer burner openings 28 from a pilot light 40 located to `one side ofthe burner as illustrated in-Figure 5. Each burner has a ash tube 4l which projects radially inwardly from the burner to a point closely surto top and comprises an outside gas chamber 2'0 55 rounding the pilot light 40 so that when a simmer burner is turned on it will be promptly lighted from the pilot 40 by the llame whichl burner chamber 2'0 throughout a small segment of the burner is closed at its bottom side by a l wall 50 which projects outwardly as at 5| and terminates in -a supporting ring 52 which is adapted to serve as a mounting for the inner end of the flash tube. This ring may be provided with a small lug 53 equipped with a screw threaded opening in which a holding screw may be mounted fortightly attaching the inner end of 'the sash tube 4|.

In addition the simmer burner chamber 25 is likewise closed by a wall 55 adjacent this same region as shown in Figure 6. The wall portion 55 however, is provided with a radial slot 56 cut partially into the walls 23 and 26 and terminating in aligned radially extending openings 51 and 58,.respectively. The opening 51 which communicates with the simmer gas chamber 25 turned on a ,iet of gas is directed substantially vcentrally into the efnd of the flash tube 4I. The

slot 56 and the inner opening or jet 58 provide for the downward and inward discharge of gas which with the flash tube serve to conduct an igniting flame from the pilot light, under the through the main burner chamber, may be formed by drilling and inserting a pre-formed tube in the drilled opening. It is contemplated lhowever. that this opening-may be formed by 'a removable' core similar to the core 'M during the die casting operation. After the casting is completed the burner openings and openings 5l, 58 and slot 55 may all be subsequently formed 'by drilling and-cutting'operations as the case maybe. Y v

A burner constructed inthe above described manner is adapted to be mounted on any of the burner bases 59 of a burner assembly of the type illustrated in Figure 5, without the necessity of determining whether the burner base requires a right hand or left hand type of burner,- as they are all the same. In each case, the ring 52 of the burner is disposedlon the inner radius so as to accommodate the flash tube 4| whichpref- Verably extends radially outwardly from a pilot light located centrally of a group `of burners in Furthermore, it will be apparent from the above illustrative example of this invention that the means herein disclosed enables the production of a burner 'having the characteristics above referred to made as a single integral metallic burnis so disposed that when the simmer burner is burner to the inside thereof adjacent the simmer burneropenings.

By referring particularly to Figures 5 and 6 it will be noted that the burner of this invention may be mounted in a group to form a burner assembly of any desired number of burners to constitute burner groups of the type used on gas stoves and the like. It will be noted that the burners are mounted on supporting members which may be formed in any suitable manner but which are here constructed with burner bases 59 having inside and outside chambers which complete the main and simmer burner chambers of the burner head. Each of the chambers of the bases is supplied with gas from a suitable valve controlledgas pipe which will not be here described as they do not per se, constitute a feature of novelty of this invention.

One feature of this invention resides in the construction of the bases 59 of the burner chambers so that all of the bases of an assembly such as shown in Figure 6 are adapted to receive burner heads of identically the same construc-V tion. This eliminates the necessity of making right hand and left hand burner constructions.

.It will be noted from Figure 1 that a plurality of lugs |30 are preferably formed on theV outer wall of the burner which are equipped with holes er head whereas heretofore, burners having corresponding structural features could only be made in two parts as a minimum. Making the burners as a single integral member is particularly desirable because the use of gaskets in assembling the parts of a two-part burner is necessary and gaskets not only add to the cost of thev burner both as an extra material and as an assembling expense, but also constitute a source of possible leakage and trouble in service. Furthermore, the single-integral burner construction is simple and inexpensive to produce and assemble.

Iclaim:

An integrally formed burner head. comprising an annular member having a top wall and inner and outer-depending side walls, said inner side wall defining the central air space, a partition depending from said top wall and disposed between and spaced from said inner and outer side walls so as to form therewith two separate gas chambers, said gas chambersbeing annular and open at their bottoms for cooperative association with a double-chambered burner base,

tween said radially disposed walls, the stepped portion thereof which closes the outer of said gas chambers being above the stepped portion thereof which closes the inner of said gas chambers, and said inner stepped portion being provided with a gas escapement port communicating with the inner of lsaid gas chambers.

^ RICH. 

